HP DPS-1400CB A flex slot SMPS PSU

No video

HP DPS-1400CB A flex slot SMPS PSU

Рет қаралды 9,610

Күн бұрын

1400w 117A @ 12v HP flex slot power supply PN: 733428-101.
My video shows how to power the unit on, and it running at 14v with no over voltage protection bypass.
With the PSU orientated with the gold contacts facing you and the 10 pins to the left, firstly connect pin 1 and 2 together, they are the farthest left and are the 2 shortest pins. I wasted a long time trying to turn the unit on with a 1k resistor, it would not work and I recommend just shorting them, you might be able to install a switch however the psu will automatically power on when the AC input is applied.
Secondly you will need to install a 1k resistor on pin 3 and ground. Any point on the metal case is ground, as is the large middle gold contact, or the long middle finger on the opposite side. I recommend you make sure its out of the way, secure and insulated so it can't potentially short on anything. I believe that pin 3 had 3.02v on it before I grounded it.
If you open the case, there is a vertical PCB that runs along the side and on it there is a very small pot facing outward. Turn it clockwise to increase the 12v output voltage, anticlockwise to lower it. I connected a 25K ohm resistor to the pin on the right of the pot and ground. This dramatically raised the minimum voltage and my maximum voltage is now over 14v, however going too high will shut the PSU down, it has a over voltage protection. I will look into removing the OVP and also determining other pins such as Vsense for vdroop sag compensation and parallel PSU usage in the future and hope to update with another video.
The PSU is tiny, has Platinum efficiency rating, and could theoretically smash out just about 100A into 14v. It can be used to power Ant miners, other Bitcoin ASICs or any GPUs, if you make your own PCIE cables, it could power huge LED arrays, CB radios or other car audio or any other very hungry 12v device, or even charge a battery! Google how much a 12v 100A charger would cost! 🤯
Breakout boards are now available! 🎉✨ Search eBay, AliExpress etc for any of the part numbers on the PSU such as HP733428-101 or 720620-B21 or 830272-B21 There is a company called "Deep In The Mines" that also sell them. I will be ordering one from China and might make a video on it. I'm on the hunt for a few more of these PSU's for a cheap price, to replace my 4x DPS-1300BB B model units right now to reduce size and weight and gain that mad efficiency.

Пікірлер: 56

@minus3dbintheteens60 3 ай бұрын

*Copied from the video description, which was written when the video was uploaded, and has always been there, available to everyone* If you open the case, there is a vertical PCB that runs along the side and on it there is a very small, metal potentiometer facing outward. Turn it *clockwise* to _increase_ the 12v output voltage, *anticlockwise* to _lower_ it. I connected a *25K ohm* resistor to *the pin on the right of the pot* and *ground* 14v is now possible, however going too high will trip *over voltage protection*

@Eddiegigowatts2 2 жыл бұрын

Thanks for the video got them working, using them in series to get 24V to charge lipos ,had to take one apart to break the negative connection ground from the case This is done by replacing one of the screw with nylon and a nylon washer between the board and metal case screws toward the tabs

@Antoz1103 2 жыл бұрын

So u made a Floating Ground but the Case is connected with Main Ground for Safty?! I wanna do that do now because the 1200w PSU are way to expensive.....

@Henning_Rech Жыл бұрын

Is it the screw close to the AC input socket? To activate the PSU it is enough to connect Pin 1,2 and 3 together. Pin 1 is GND, too. The 1k resistor is not necessary.

@structuraldamage8202 8 ай бұрын

i'm about to do the same, i'd be really interested in knowing how your charger is performing and if you've had any issues. thanks

@oriongamingtv1401 4 ай бұрын

@@Henning_Rechso what your saying is just soldering pins 1,2,3 together works fine? No resistor needed like the video shows?

@gptech2444 3 жыл бұрын

Just bought one, this has been a huge help.

@alberts6501 2 жыл бұрын

thank you for figuring this out. The internet has provided no results for the pinout.

@robertlifea6405 4 ай бұрын

Hi, do you have a link to do the volt mod on the HPE1400CB? Thank you

@Tuedelueh Жыл бұрын

very good video thanks. can you tell me where to solder the 25k ohm resistor?

@peterwillems9161 26 күн бұрын

Hello @Minus 3dB In The Teens not sure if you are still around - about the 25K resistor to the pin on the right of the pot. This is on the middle connection of the pot meter, correct?

@oriongamingtv1401 4 ай бұрын

I know this is a two year old video, but does this work on 120v for USA?

@minus3dbintheteens60 3 ай бұрын

Well it says 200v - 240v on it, so I doubt it

@waldguy 6 ай бұрын

I obtained a 500W flex slot PSU, and couldn't find anything anywhere else. As soon as pins one and two were bridged, the green light came on, and 6V at the big outputs. When pin 3 was grounded (680 or 1K was the same), 12.3 V. So it's usable anyway, and thanks. I may try to get it to 13.6 or so.

@minus3dbintheteens60 6 ай бұрын

I'm happy you got it working! The resistor is probably not necessary, I used it as a precaution

@MorganEdgy Ай бұрын

Hi, I was sold one of these HPE supplies under the pretense that it worked with a normal PC. Is there a way that I can adapt it to a normal consumer motherboard?

@xp62530 Жыл бұрын

hi ! did you found overvoltage protection ?

@minus3dbintheteens60 Жыл бұрын

You can now get breakout boards for this model!! Search for the Option Kit P/N: 720620-B21. You might try the other numbers and find more results too, such as 733428-101

@Jimmyboy1674 Жыл бұрын

Video for this 1400w module for the voltage hack will be uploaded soon! I will post a link here when it's done!

@beekeeper8474 Жыл бұрын

Did you find over volt protection

@Antoz1103 2 жыл бұрын

Hey i think of buying 2 of these PSU´s to fire Up both to get 24v for my Charger. The pinout is nice now i know how i can Power them on. And i think its the Same way i have to Float Ground on the Sleeve PSU as in other Guides. So i have a Brutal Power Supply then for my 2x30A charger.

@jeu34sgu 5 ай бұрын

Yo tengo la dps-800ab y es muy simple elevar el voltaje sin manipular nada solo conectando una resistencia de 1k en la línea positiva

@Arek_R. 6 ай бұрын

I can probably figure it out but do you have a video showing the 14V mod in detail? It has been 2 years, have you found what is tripping the OVP? A lot of people could make use of 15V. I turn on the PSU by shorting all those three pins directly (first pin is ground, two other are PSON and PSKILL), and to toggle it ON/OFF without unplugging the mains, the first pin is being switched from the other two which remain connected together. EDIT: Nvm, someone already did OVP video watch?v=e5L4t9x0kEc&t

@crunch6947 5 ай бұрын

you want to power off at mains other wise you will still have the ac circuit powered up which will run warm and still pull power. putting a switch out front to switch only shuts off the dc power

@youtubeturcia 3 ай бұрын

Hello! How did you manage to get over 13 V?

@minus3dbintheteens60 3 ай бұрын

I added extra resistance to the pot that controls the feedback and therefore the output voltage. 25K ohm

@buas7 8 ай бұрын

can you so me how and where you put the resister ect

@adrianbusuioc982 2 жыл бұрын

Hi, thank you for showing us how to use this PSU. Can you please explain us in a little more detail how you have soldered the 22k resistor, more precisely from where to where because I have tried and I’m constantly shorting it.

@adrianbusuioc982 2 жыл бұрын

Rectification, I meant 25k resistors that you have mentioned on the logic board.

@user-bw8rh6ui6s 8 ай бұрын

Only the 25 k will work? I test a 22k an a 30k, but every time protect... Take a picture?

@davidburns4176 2 жыл бұрын

Cheers from the Ozarks. In one of your comments you mentioned parallel operation. Have you determined a pin to connect between two units to achieve this? For example on the HP 1200w units I believe it's pin 34, the load share pin.

@minus3dbintheteens60 2 жыл бұрын

Sorry David, I currently only have 1 of these units, I have 4x DPS-1300BB B which are very different. I've got a lot of other stuff on at the moment, but if I do work it out I will report it here

@kiwigeeknz 2 жыл бұрын

I did this mod and got a stable 12.2v… then I drilled two binding posts through the PCB to connect to (rather than soldering wires onto the terminals). The voltage is now 13.1v and the fan ramps up lots when I simply put a multimeter across it…. You think it is stuffed? Perhaps the PCB is multi layered?

@minus3dbintheteens60 2 жыл бұрын

Look at the + and - output pins, they are different sizes on top than they are underneath. You might have it shorted out. That is why I just soldered to the top pads only

@tommasofimiano6992 2 жыл бұрын

Hi, can you tell me how to disable OVP to Delta DPS-750 nb? thanks....

@coreyfink1412 3 ай бұрын

Can you power this from 120v?

@minus3dbintheteens60 3 ай бұрын

If you just read the sticker you'll know. It says 200v - 240v, so I doubt it

@fathurajja1108 Жыл бұрын

For dell dps 1200 .1400watt pin turn on?

@structuraldamage8202 8 ай бұрын

Gday mate, thinking about using these for an rf amp supply, do you have any idea if they produce rf Interference. Thanks for the video

@minus3dbintheteens60 8 ай бұрын

I have no idea how to even test that bud. But it's a high quality server power supply (so reliable and probably shielded somewhat for a server environment?), it has platinum efficiency (over 94%) and one of the things I deeply love about it is that I can run my car amplifiers directly off it, and I get a dead silent noise floor, no switching noise, nothing, plus the fan is crazy silent too. I seriously love it

@structuraldamage8202 8 ай бұрын

bloody hell i wish the mrs would answer me that quick. thanks mate it appears most of the rf guys go for the hp's. for the price they are its probably worth just buying one and trying it. thanks for your time and video cobba, nice work @@minus3dbintheteens60

@EdmundoFasano 2 жыл бұрын

Hello my friend. let me see If I understand you... for my purposes I need 12V... I only have to short pins 1 and 2 and connect a 1k resistor from pin 3 to gnd? thats all?

@minus3dbintheteens60 2 жыл бұрын

That is all. That will turn it on. I have found that when its turned on then I connect it to something, it turns itself off, so I unplug the IEC power cable from the PSU, unplug the ground wire from what I am connecting the PCU to, then I plug the power back in, then connect the ground wire back to the load, eventually it will stay on. I use it charge my car battery, I put alligator clips on the PSU output. I am getting 100A at 14v no probs.

@hellohello5720 2 жыл бұрын

how to autostart

@julesmarchand2765 9 ай бұрын

just bought 4 to make a big workbench power supply

@structuraldamage8202 8 ай бұрын

G'day mate how did u go with your supply, have a win ?

@trentoncorbet1 2 жыл бұрын

Just a question what does the resistor attached to the pins do? Do U need the resistor could U just short pin 3 to ground with a wire

@minus3dbintheteens60 2 жыл бұрын

The resistor is just to limit current. I was using resistors rather than dead shorting pins while trying to figure out the pin layout. Shorting those pins would probably work fine, however I dont remember testing it, and can't guarantee anything.

@trentoncorbet1 2 жыл бұрын

@@minus3dbintheteens60 thanks for the reply mate. 👍

@markatkin7950 2 жыл бұрын

@@trentoncorbet1 Hey just wondering if you tested out shorting pin 3 to ground with out the resistor?

@trentoncorbet1 2 жыл бұрын

@@markatkin7950 yeah mate I've had mine working without the resistor for about 5 months using it to power an amplifier and car stereo head unit running subwoofers and a couple 6 inch speakers, haven't had a problem so far, have done this on 2 psu's so far.. both dell branded. 1x 1400w and the other If I can remember 750w or so

@minus3dbintheteens60 Жыл бұрын

If you can't work out where the voltage adjust pot goes then you shouldn't be messing around with it at all

@beekeeper8474 Жыл бұрын

Well that's just an ass comment

@kayay1982 Жыл бұрын

Sometimes people need an helping hand to get things sorted out. Everyone starts at Zero. 😀 That's why most people look tutorials. But yes safety should be at first place at work like this. Anyway appreciate help for the inside look.

@minus3dbintheteens60 Жыл бұрын

Look in the discription